Ontario Public Service Employees Union

Ontario Public Service Employees Union (OPSEU/SEFPO) is a trade union that represents employees working in the Ontario public sector. Its core activities include negotiating collective agreements, addressing workplace concerns, and providing representation for members in grievance and arbitration processes. The union also offers member services such as access to an online portal, informational resources, and assistance with employment‑related matters.

OPSEU/SEFPO distinguishes itself by focusing exclusively on public‑sector workers across ministries, agencies, hospitals, schools, and other provincial institutions. It maintains an affiliation with the Canadian Labour Congress, which connects it to a broader national labour movement. Through this affiliation and its own advocacy efforts, the union participates in public policy discussions that affect public‑sector employment and services in Ontario.

Structurally, OPSEU/SEFPO operates as an independent union governed by an elected executive board and a network of local units that serve members in different regions and sectors. Its headquarters is located in Canada, and the union’s constitution outlines the democratic processes for leadership selection and policy direction. The organization does not have a parent company or subsidiary structure typical of commercial enterprises.

On April 1 2025, OPSEU/SEFPO disclosed a cybersecurity incident involving unauthorized access to its information technology systems. The incident prompted the union to activate countermeasures, engage external experts, notify law enforcement and legal counsel, and temporarily suspend services such as the member portal while an investigation into any potential data compromise remains ongoing.